[AT] grounded coil

Steve W. falcon at telenet.net
Thu Aug 30 07:11:06 PDT 2007



RonMyers at wildblue.net wrote:
> Sorry Charlie but we all can't be number one.
> 
> By the way how do you ground those coils that have a plastic case.
> 
> And if the coil case has to grounded then why is there no way to ground them.
> 
> You guy ever think about that or do just blindly follow some idiot's
> advice and drill and tap it for a ground wire.
> so kick me off i don't care I'm fed up with the Idiots on this stupid list
> anyway.
> 
> Gee I got a degree in Electronics I'm an expert on everything.
> 
> I would be willing to bet that not one of you can draw a simple wiring
> diagram for an ignition system from memory. Or how many of you know how it
> works to get 20 k volts from that little coil. or what the Capacitor in
> the circuit does.
> 
> And why is the coil grounded though the points.
> 
> man some of you guys are hard headed aren't you.
> RON
> 

No but they are CORRECT!

The 20-40K generated in the coil comes from the collapse of the magnetic 
field that results from the breaking of the circuit. When it collapses 
it gets absorbed into the primary side of the coil and creates a high 
voltage which jumps the gap.

FYI the condenser in the circuit does two things. One is it reduces 
points wear from the voltage arcing across the point gap. The other is 
that it helps reduce RFI while doing the above. Other than that it isn't 
needed.


-- 
Steve W.
Near Cooperstown, New York
NRA Member
Pacifism - The theory that if they'd fed
Jeffrey Dahmer enough human flesh,
he'd have become a vegan.



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